Poprocks!! I don't know why, that just popped into my head the moment I saw the sweater, before I ever read that it reminded you of butterflies. Not a very "natural" name, but that's what jumped into my head!

I love this pattern, and wool/cotton blends are my favorite. This is probably a stretch, but your idea about it reminding you of butterflies made me think of moths and moths made me think of Elnora Comstock, the girl in Girl of the Limberlost who subsidized her studies by collecting moths. How about Limberlost?